I kept wondering why people call lysimachia a thug - I think mine a) only slowly spreads and b) never flowers because it has a slightly shady position. Or maybe it's the poor drainage? Who knows. It certainly *does* spread, but not wildly out-of-control spread. It has been suggested to me that the green version is much worse than the gold, which is what I have.
Petasites, I love the look of, but have heard the horror stories (do you know RCN/ Deb? She had a horrible experience, if I remember correctly) and haven't chanced it. So many things that are fine in cooler climates seem to go bonkers down here.
